Typewriting machine



May 16, 1933. A. e. F. KUROWSKI TYPEWRITING MACHINE Original Filed April24. 1924 2 Sheets-Sheet l I //71 e/7f0r: %%W

A fforrzey.

Patented May 16, 1933 UNITED" STATES PATENT OFFICE ALFRED G. I.KUBOWSKI, OI BROOKLYN, NEWYORK, ASSIGNOB TO UNDEBWOOD ELLIOTT FISHEROOIPANY,OI' NEW YORK, N. Y A CORPORATION OF'DELAWABE WING CHIN EOriginal application-fled April 84, 1924, Serial 110. 108,883. Dividedand tlill application filed Iebruary 4,

1980. Serial No. 485,756.

This invention relates to improvements in typewriting machine cargringcases, and particlarly to types commo y known as portables, in which themachine is normally enclosed within a case adapted to be convenientlycarried b hand.

One of the o jects of the invention is to provide a two-part, separablecase in which the cover element may be positively and safely secured tothe base in such manner as to efiiciently protect the machine from in-'trusion, damage, dust or moisture, under ordinary conditions of transitor storage,.or permit the ready removal of the cover to allow authorizeduse of the machine, either as aflixed to the base element of the case orremoved operably intact therefrom.

Another purpose is to produce a carrying.

case base provided with means which operate effectuall in minimizing,reducin and preventing e transmission of soun incurred by operation ofthe machine, absorbing air-carried sound vibrations to a markedinafterappear.

In the accom anying drawings,

Figure 1 is a ongitudinal sectional view of an embodiment of theinvention, illustrating the relation of parts to a conventionaltypewriter shown in broken lines within the case.

Figure 2 is afragmentar sectional view taken in a lane represented y thecharacters ZZ of igure 1.

Figure 3 is a fra taken on line X- entary .sectional view of Figure 2.

Y of Figure 2.

Fi ure 5 is another like view taken on line W+ of Figure 1.

Figure 6 is a partial plan view of the base 18, inclined downwardlyFigure 4 is a similar view taken on line of the finishingframe of thetypewriter in detail.

Figure 7 is a front elevational view of the same.

Figure 8 is a fragmentarysectional view taken on line VV of Figure 6.

Figure 9 is a partial sectional and partial side elevational view of oneof the inner frame feet, drawn to an enlarged scale.

a The ortable t pewriter, shown in Figure land esignate nerally by thenumeral 10, is standard in all respects and constitutes a completecommercial entity.

. The carrying case is composed of a top or front plate 15, 'preferablmade of well-seasoned wood, as is also theli 16. An integral piece ofsheet-metal is formed to present side walls :17 and a cover at the front19 and havinginwardly-curve edges 18engaged in corresponding recesses inthe upper and end edges of the plates 15 and 16, to which thecover-plate is rigidly secured, and the entire outer surface of thecasing is insheathed in leather.

A strap handle 20 is provided on the top ottom or base plate I plate 15for convenience 1n carrying, and a I lock, generally designated by thenumeral 21, is furnished to provide security from unwarranted intrusion.

Fixed near each of the four corners of the bottom plate arebutton-headednails 22 or the like to protect the leather-covered surface of thecasing when resting on its bottom or lower end, the foregoing elementsconstituting the cover or removable portion of the case.

The base-portion is composed of a wooden frame 23 formed fromquarter-round molding with mitcred joints, freely receivable withinthe'lower portion of the cover.

A metal plate 24 is secured to the flat lower surface of the frame 23,and is provided on its lower exposed side with a leather covering,

from which extend four cushion elements, as

the rubber feet 25, held in rigid engagement by cement or like adhesive.

The rear member of the frame 23 contains recesses26 adjacent its ends,these recesses havin metallic linin 27 suited to be engage %)y a pair ofhoo s 28, fixed to-the inner surface of the-bottom plate 16, and adaptedto interlock with the linings to removably engage the rear end of thebase within the cover, as best shown in Figure 3.

Set midway in the length of the front member of the frame 23 is abutton-headed stud 29 projecting to interlockwith a spring latchincorporated in the lock 21, see Figure 1, thus co-operating with thehooks 28 at the opposite end to securely lock the cover to the base,constituting a single carrying unit.

- The typewriting machine 10, as indicated in Figure 1, is composed of apair of ribbonspool housings 51 and a curved dust-guard 52. The brackets53 for the housin s 51 together with said housings and the dust-guard 52co-operate to provide dust-guards for the front links (not shown) of thetype-action and the type-heads (not shown). Cast side frames 11 havingextending base pads 12 serve as feet during assembl of the machine, thesame being drilled and tapped, as shown in Fi ure 8, to receivetemporary rubber feet.

The typewriter frame sides 11 terminate, as shown 1n Figure 1, at theinner row 'of the ke -levers to define a machine base area, butaflbrding no protection to the bank of keys, and it would obviously addgreatly to the weight of the frame and easing if it were continuedaround-the keyboard in the usual manner. 4

The present invention contemplates the formation of a separate enclosingfinishing frame 54 or silencing pocket shaped by powerv press methodsfrom a single piece of sheetmetal to produce opposed side walls 30 andrear wall 31, all of which have inwardlycurved or rounded-over upperedges 30 and 31', presenting a smooth and agreeable finish, and servingas dust-guards for the encased portion of the typewriting machine.

The front wall 32 is shaped in conformity with the general contour ofthe keyboard, which is enclosed by itat the front and sides, and isprovided with an inreaching ledge 32'.

The lower edges of the finishing frame are flanged inwardly, presentinga continuous ledge 33, the sides being stiffened by a crossbar 34disposed in the plane of the ledge 33.

A base-plate or floor 35 is riveted to the ledge 33, along the side andrear walls, and also to the cross-bar 34, this plate having a uniformshallow central de ression 36 openatin to stiffen the plate, a ording aclosure for t e base of the machine and space for the operation of themachine parts, and increasing the rigidity of the structure as a unit.

The base-plate may be provided with openings 37 arran ed in anypreferred manner, as 1n icated in igure 6, and near its corners isprovided with openin s 38 registerable with the o enings in the eet 12of the machine. The unction of these openings is to break the base whichwould otherwise be the same as the sound-producing diaphragm of a drum.

These openings materially reduce the noise which would result if thebase were left as a continuous diaphragm.

Secured to the inner surfaces of the enclosing finishing frame walls isa relatively thick layer of soft porous felt 39, the same acting toabsorb sound emanations, which would otherwise be transmitted to the suporting base.

The upper surfaces of the ledge 33, crossbar 34 and entire base-plate 35are similarly covered with a like but thinner felt fabric 40, and thus,when the machine is set in the enclosing frame, its feet rest upon thelined surface 40.

The feet 41, shown in detail in Figure 9, consist of a cylindricalrubber block having an inverted conical top portion 42 disposed within adrawn metallic cup 43, provided with a pressed-in or rivetedscrew-threaded stud- 44 suited to engage in the pads 12 after passingthrough the openings 38 in the casing base-plate.

In order to secure the feet 41 to the base of the carrying case and;prevent any relative shifting movement, flanged metallic rings 45 arefixed in appropriate locations in the base, these rings being receptiveof the feet and which are ositively but removably held therein b t efollowing means.

Exten ing op ositely outward from the sides 30 of the finishing frameare rigid studs 46 having rounded outer ends, these studs being suitedto engagein openings formed throg' h latch-elements 47, pivotallysupported 111:; rackets 48, fixed on the base-plate 24, as best seen inFigure 4.

The outer ends of the latches are curved to rovide fin er-holds andtheir inner ends proect beyon their pivotal points to engage the freeend of a sprm detent 49 riveted to the plate 24 and extending below thepivot in the bracket 48, the detent being so shaped and arranged as tohold the latch 47 in either a raised, operatively engaging, position orwhen turned down to clear the studs 46.

These latches are readily accessible when the cover of the. carryingcase is removed and are operable by hand only, no tools being requiredto release the machine from the base.

As a further factor in rendering the machine substantially noiseless,when used upon the base of the carrying case, the base may be providedwith a thick layer of felt 50 on its entire upper surface, the, samepreventing transmission of sound.

It will be noted that the two side frames 11 are machine standards topromote the assembly of the parts and establish a machine-base area thatdoes not include the keyboard; that the assembled machine is enclosed bya highly polished finishing frame which also includes a forwardextension to protectively enclose the keyboard of the machine; that theenclosing finishing frame .is formed with a floorsection ofsubstantially the same area as the established base of the machine toenclose the machine on the under side; that the finishing frame isattachedto the machine side frames by cushioning feet; that thefinishing frame is lined throu bout with felt to form a soundabsorbingpocet; that the finishing frame is secured to a sound-absorbingbaseboard; and that the sound-absorbing baseboard primarily is a unit ofthe typewriting machine to increase the base-area of the machine when inuse and only coacts with the cover when the machine is not in use orbeing carried from place to place.

It will also be seen that the carr ing case, being formed with asheet-metal aselate for the typewriting machine and a s eetmetalopposite side wall for the cover, provides a carryin case having aminimum thickness, materially reducing the thickness of carryin cases inwhich the corresponding walls are formed of wood or other compositions.The arrangement permits the sheetmetal walls to be spaced a minimumdistance apart, with sockets to receive the feet of the typewriter, sothat they will rest directly upon the base. It will be noted that thetypewriting machine with its outer finishing frame resting upon thebase-plate, provides a chambered pocket between the bottom of thefinishing frame of the typewriter and the base-plate into which soundsemitted through the bottom of the finishing frame are received. Thisarrangement permits the positioning of a sound-absorbing padding on thebase-plate to further deaden the sounds which enter this chamberedpocket. The padding extends over the base-plate between the sockets forthe feet of the machine and the flanges or frame-members 23 of the basewithout necessitating an increase in the space between the two walls.

To assemble the typewriting machine 10 with the frame 54, the latter,which has been previously polished, is arranged upright on ase-plate 35,whereupon the completely assembled t pewriting machine 10 is inserteddownwar ly into the frame 54, as shown in Figure 1. When the machine 10and the frame 54 are assembled as shown, the openings of pads 12 alignwith'the openings 38 of base-plate 35 so that thestuds .44 are readilyscrewed into the pads to secure the feet 41 and frame 54 to thetypewriting machine. 1

Variations may be resorted to within the scope of the inventions, andportionsof the imlplrovements may be used without others.

aving thus described my invention, I

claim:

1. A sound-absorbing .finishing mask for a portable typewriting machineframe having attaching feet, said mask comprising an outer frame tosurround the lower portion of a t pewriting machine frame but spacedthere rom, said outer frame comprising side,

including a stiffening bottom plate extending from the back portionforwardly and con-,

back-and frontportions and a base, said base I upon said bottom plateand filling the space between said mask and typewriter-frame, and.

forming a sound-absorbing pocket.

2. In a portable ty. ewriting machine having a mainframe, a nishing maskenclosing.

the main frame and the lower portion of the typewriter, including thekeyboard thereof, said mask havin inturned edges at the top andinreaching anges at the bottom, a floor secured on the flanges, saidfloor having a central depressed portion and containing openingsregisterable with the foot-attaching openings in the typewriter, andmeans for removable engaging said mask to the base of the main frame.

3. In a portable typewriting machine having a main frame, a finishingmask enclosing the main frame and the lower portion of the typewriter,including the keyboard thereof, said mask having inturned edges at thetop and inreaching flanges at the bottom, a floor secured ontheflanges,a layer of felt fixed on the inner surfaces of said mask and itsfloor, said floor having a centrally depressed portion containing cornerperforations, and cushion foot-carrying elements having threaded studspassing through the men tioned perforations to engage in the footpads ofthe machine.

-4. In a portable typewriting machine having a main frame, a finishingmask enclosing the main frame and the lower portion of the typewriter,including the keyboard thereof, a bar extending between the sides ofsaid mask, a. plate fixed on said bar and on inreaching flanges at therear and sides of the mask, noise-absorbing linings on the innersurfaces of said mask and plate, and means associated with the feet ofthe typewriter for clamping the plate thereto.'

5. A portable typewriting machine having a double frame consisting ofinner supporting andouter masking members, the inner frame-membersupporting moving parts of the'machine, the outer frame-member beingformed with a continuous overhanging flange extending around the sides,and front of the mask, sound-absorbing padding arranged under saidflange and occupying the space bet-ween said frames at the sidesthereof, and means whereby the frames are secured together.

6. As a new article of manufacture, a sound-absorbing finishing mask forattachment to a portable typewriting machine, including an outermask-member struck up fromsheet-metal to surround. he sides and front ofthe machine, and having a floor to extend thereunder to serve as a braceand to form a sound-absorbing pocket, and a soundabsorbin paddingsecured in said maskmember for packing against the sides of thetypewriting machine. 1

7 A portable typewriting machine having an inner supportingframe-structure for the operating parts of the typewriting mechanism andfrom which the keyboard forwardly extends, and a finishing frametherefor including side walls extending around said supportingframe-structure and the forwardly-extending keyboard and a floorextending under said supporting frame-structure of the typewritingmachine, thereby forming a sound-absorbing pocket for encasing thenoise-producing parts of the typewriting mechanism, a sound-absorbingmaterial being lined between the inner frame-structure and the finishingframe.

8. A typewriting machine of the portable class provided with relativelymovable parts including a platen and keys, and having a skeletonself-sustaining main frame for entirely supporting said parts, said keyso ccupying a position in front of the skeleton frame, a surroundingcasing complementary to said frame and pressed from thin sheetmetal intoa shape to embrace the frame and constitute an outer decorative maskapplied upon said self-sustaining main frame, said mask including sideportions below the platen and masking the sides of said frame but spacedand disconnected therefrom, a back masking portion at the rear of saidmachine, and a front portion inclining do'w-nwardly to mask the front ofsaid frame and extending around and forwardly of said keys, said maskhaving a bottom member rigidly connected to said side members to bracethe same, all of said side, back and bottom members provided withsound-absorbing linings to form a sound-subduing pocket, and said maskbeing structurally independent of said frame, and means for fasteningsaid mask to the bottom of said frame.

9. A typewriting machine of the portable class provided with relativelymovable parts including a platen and keys, skeleton selfsustaining mainside frames for supporting a the same, said keys occupying a position 1nfront of the skeleton framesand a surrounding casing complementary tosaid frames and shaped to embrace the frame but spaced and disconnectedfrom the sides thereof and constituting an outer decorative mask for theportable typewriting mechanism, said mask being pressed from thinsheet-metal and having inturned flanges at its edges and including sideportions masking the sides of said frames, and having a front maskingportion extending downwardly from the front ofsaid frames and having anextension around and forwardly of said keys, said mask beingstructurally independent of said frames, and means for fastening themask to said frames. 10. A typewriting machine of the portable classhaving a self-sustaining skeleton main flanges to support said sidewalls and extending from the rear forwardly but leaving an open space atthe forward end of the mask, and means for fastening said bottom withthe flanges to said frame.

11. A typewritin machine of the portable class havin a sel -sustainingmain framework and re atively movable parts of a typewriting machinesupported on said framework, a one-piece decorative encirclin maskpressed from sheet-metal and space from the inner framework and havingside Walls and a rear wall enclosing said framework, and having abottom, said side walls having inwardly-extending flanges, and a liningof sound-absorbing material on the inner faces and bottom of said maskto enable them to co-operate to form a. sound-absorbing pocket, saidbottom being fixed to said flanges and extending from the rear forwardlybut leaving an open space at the forward end of the mask, and removablefeet having means for fastening said base to said framework.

12. A compacted typewriting machine of the ortable class, includingmovable typewriting mechanism and also including an entirelself-supporting main skeleton framing whereon said movable mechanism ismounted, said framing including skeleton side frames, and said machineincluding a decorative mask for both said framing and members formasking said side frames, sound subduin linin s between said sidemembers and sai side rames, and also includin a keyboard-surroundingportion extended forwardly from said side ortions and having rolled-overstiffening e ges, said side masking portions joined at the front b afront masking'portion, all .of said masking portions being structurallyindependent of said framing and encasing the same and attached thereto.

13. A compacted typewriting machine of the portable class, includingmovable typewriting mechanism and also including an entirelyself-supporting main skeleton framing whereon said movable mechanism ismounted, said machine including a decorative mask for both said framingand said mechamsm, said mask pressed from thin sheet-metal and includingop osite side members for maskin said side rames, and also including akeyboard-surrounding portion extended forwardly from said side portionsand having rolled-over stiffening edges, said side masking portionsjoined at the front by a front masking portion, all of said maskingportions being structurally independent of said framing and encaslng thesame and attached thereto, said side portions having inturned flanges,and means for attachin said mask to said framing.

14. compacted typewriting machine of the ortable class, includingmovable typewritmg mechanismand also including a selfsupporting mainskeleton framing whereon said movable mechanism is mounted, said framingincluding skeleton side frames, and

said machine including a decorative mask for both said framingand saidmechanism, said mask pressed from thin sheet-metal and includingopposite side members for masking said side frames, and also including akey-.

board-surrounding portion extended forwardly from said side ortions andhaving rolled-ovenstifiening e ges, said side masking portions joined atthe rear by a rear maskf ing portion and also joined at the front by afront masking portion, all of said masking portions being structurallyindependent of said framing and encasing the same and attached thereto,said side portions having inturned flanges, and means for attaching saidflanges to said side frames, said case also having a bottom bracingportion, and said sides, said rear portion and said bottomportion havinga sound absorbing lining toenable them to co-operate to form asound-confining and subduing pocket.

15. A typewriting machine ofthe portable class rovided with relativelymovable arts inclu ing a platen and keys, skeleton sel -sustained sideframes for supporting the same,

said ke s occupying a osition in front of the ske eton frames, an asurrounding casing complementary to said skeleton frames and shaped toembrace the frames but spaced from the sides thereof and constituting anouter decorative mask for the portable typewriting mechanism, said maskbeing pressed from thin sheet-metal and having inturned flanges at itsedges and includingside portions masking the sides of said frames, aback portion masking the rear of said frames, and a front maskin portionextending downwardly in front 0 said frames and having an extensionaround and forwardly of said keys, linings of sound-deadening fibrousmaterial being provided upon the side and rear walls of said mask toenable them to co-operate to form a sound-absorbing enclosure, said maskbeing structurally independent of said frames, and means for securingthe mask upon said skeleton frames.

class having a double frame includin a selfsustaining skeleton mainportion, re atively movable typewriting mechanism being supported onsaid main frame portion, and also including a decorative encircling maskpor tion formed from sheet-metal and with its sides separated and spacedfrom the structure of said main portion and including side and rearwalls and a front enclosing said main portion, said side walls havinginwardlyextending under flanges, a transverse member for attachment toboth said flanges'to connect and support said side walls, and means forsecuring together said transverse member, said flanges and said mainframe

